Anchorage



June 9; 1931. w. H. WHEELER ET AL 1,809,465

ANCHORAGE Filed Feb. 17, 1927' 1% ATTORNEY Patented June 9, 1931 WILLIAM." H. WHEELER, OF NEW YORK, N KY., AND JUDSON C. LOGAN,y OF JERSEY CITY,

NEW JERSEY ANCHORAGE 'Application filed. February 17, 1927. Serial No. 168,911.

This invention relates to an improved means of anchoring a member to a suitable base in such manner that it cannot be removed without mutilating the member or the base. l

The present invention is a modification of the inventioncovered by Letters Patent of the United States No. 1,568,433, issued J anuary 5th, 1926, and of the invention disclosed 1e in our copendng application, Serial No.

168,908 filed February 17th, 1926. y

The present'invention has for a specific object to provide a form of anchorage for securing an identification plate or device to a panel or board, such as the instrument board or dash board of an automobile. lt is customary to make such instrument boards and dashboards of relatively thin sheet metal, which does not provide suflicient body to 2O support a threaded anchorage, suchas shown in the aforesaid patent. vIt is therefore an object of gthe present invention to provide an anchorage that is particularly adapt-ed for securing an identification device to a rela# tively thin base or panel. y f

With these and other objects in view, our invention consists in certain novel features and arrangements and combinations of parts, as will be hereinafter described and pointed ,out in the claims.

ln the accompanying drawings,

1 Figure 1 is a front elevation of an identilication plate secured to va panel;

Fig. 2 is a sectional view taken on the line 3'5 2 2 of Fig. 1; y

Fig. 3 is an end view of one of our anchorage devices; v

Fig. 4 is a side elevation, partly broken away, of one of said anchorage devices 5 and Fig. 5 is a cross-sectional view showing a f modification of our invention.

In Figs.` 1 and 2 we have used 'the numeral 10 to indicate a sheet'metal panel, such as the instrument board of an automobile.

However the panel need not be of metal, but could, just as well, be of wood or other material. A recess 11 Lis formed in the panel, and in this recess is fittedk an escutcheon 12. The latter may be of any design suitable for the purpose, and is preferably formed with 'a f marginal bead 13. 0n the escutcheon and within the bead, is placed the identification plate 14, and the latter is anchored in place by means which will now be described.

Apertures 14 are cut in the recessed portion of the panel and in the escutcheon, to receive a pair of screw plugs 15. Each screw plug is exteriorly threaded at one end and has an annular flange or shoulder 16 near the opposite end. The threaded ends of the screw plugs are `passed through the apertures 14 and screwed into threaded openings 17 in a possible to unscrew the nut. Therehis no` way of operating from the rear of the panel to disengage the screw plugs from the panel, without A cutting the. backing plate or the panel. Furthermore, the screw plugs and the backing plate are made of hardened metal whilchwill resist files, saws,or other cutting too s.

front of the panel, and this is precluded by coveringy the front ends of the screw plugs with the identification. plate 14,- as will be explained presently.

Each screw plug 15 is formed with'a'recess 19, in its forward or unthreaded end, leaving` an annular rim 2() which projects beyond the shoulder 16. The recess 19 is undercut to .form 'an inwardly projecting lip 21 at the mouth of the recess, and this lip .has a sharp The only way, then, of removing the screw plugs, is to operate on them from the lower corner 22 and a-rounded upper corner 23. A slot 24 is Cut through opposite sides of the rim, to receive a screwdriver or other tool, whereby the screw plugmay be screwed linto the backing plate. Each opening 17 i-n the backing plate, is made of a size to provide a very tight fit kfor the threaded end of the screw plug, so that the lattercannot Work loose.

Within therecess-19 is placed an Hexpander plug 25, which has a cylindrical body 26 with a base flange 27 at the iner end and a frustoconical portion 2S at the outer end. The base flange is of such size that only by the expendi ture of considerable pressure may the expander plug be forced past the lip 21 into the recess, and once introduced into the recess, the expander plug will be retained therein, althou h it will have considerable freedom 0f motion Within the recess.

The late 14 is provided with a pair of annular flanges 29, adapted to enter the screw plugs 15 between the lips 21 and the expander plugs 25. The flanges 29 are formed on the' under side of the plate, on centers spaced to aline with the centers of the apertures 14. Each flange 29 is formed between a central bore 30 and an exterior, concentric groove 31.

Neither the bore nor the groove break through the outer or front face of the plate. The bore 30 is deep enough to receive the expander plug 25, when the plate 14 is pressed home against the escutcheon 12, and is of a diameter somewhat smaller than the diameter of the cylindrical body 26. The groove 31 is adapted to receive the rim 20, and has a countersunk portion 32 at the mouth thereof, to receive the shoulder 16. The groove 31 extends to within a short distance of the outer face of the plate 14, thereby providing an area of weakness 33 surrounding the flange 30.

After the screw plugs, with expander plu s retained therein, have been secured to t e panel in the manner described above, the plate 14 is anchored to the panel by forcing the flanges 29 intoY the recesses 19. The rounded corners 23 assist in introducing the flanges into the mouths of the recesses. As the flanges are forced in, they follow the contour of the expander plugs, being flared out by the frusto-conical portions 28 into the undercut portion of the recesses and then hugging the cylindrical portions 26. Any effort to withdraw the plate 14 from its seat, is resistedby the sharp corners 22, which dig into the flared portion of the flanges 29, and the parts are so proportioned that the weakened area 33 will tear out before the flanges will shear olf. The flanges 29 adhere by friction to the cylindrical portion 26 of the expander plugs, andthe latter, since they are not secured to the screw plugs, tend to rise with the flanges 29, when any effort is made to withdraw the plate from its anchorage, thereby amming the flanges 29 against the corners 22 and preventing said flanges from being contracted and drawn out by the same path they entered the recesses 19. Thus a firm anchorage for the plate 14 is provided, which pill tear a piece out of the plate before it rwill et go.

As stated above, the screw plugs 15 and the backing plate 18 are made of highly hardened metal, and if heat be applied, sufficient to draw their temper, it will disligure the outer surface of the plate 14. The backing plate is relatively thick and has a large capacity for heat, hence a great deal of heat will be required to draw its temper.

Attention is called to the fact that the plate 14 is relatively thicker than that shown in the aforesaid Patent (No. 1,568,433), providing sucient metal to form the flanges 29 of adequate length for anchorage purposes without having them project from the rear face of the plate. This reduces the cost of manufacture and permits the plate 14 to seat firmly against the escutcheon. The latter, aside from providing an ornamental border or frame, also prevents the introduction of a tool under the plate to pry it olf its seat.

As in the construction shown in the aforesaid patent, the rims 2() of the screw plugs, project so far into the plate 14, that it is impossible to saw the plate edgewise, clear of said rims, without tearing or breaking through the outer face of the plate.

Fig. 5 shows a plate 14 mounted on a base 10 of slightly different form from the base shown in Figs. 1 and 2. The base 10 has no recess therein. An escutcheon plate 12 provided with a marginal bead 13 bears directly against the face of the base. Otherwise the construction is similar in every respect to that shown in Figs. 1 to 4, inclusive.

We claim:

1. In an anchorage of the character described, a base formed with two apertures, a plate on one side of the base, a pair of screw plugs covered bv and affixed to the plate and projecting through said apertures respectively, and, on the other side of the base, a nut common to both of said plugs and into which said plugs are screwed.

2. In an anchorage of the character described, a base formed with two apertures, a plate on the forward side of the base, a pair of screw plugs secured to the plate and projecting through said apertures respectively, each of said plugs being formed with a shoulder bearing against the forward side lof the base, and a nut at the rear side of the base into which said plugs are both screwed.

3. In an anchorage of the character described, a base formed with two apertures, a plate on the forward side of the base, a pair of screwplugs secured to the plate and projecting through said apertures respectively, each of said plugs being formed with a shoulder bearing against the forward side of the base, the plate being recessed to receive said shoulders, and a nut at the rear side of the base into which said plugs are both screwed.

4. In an anchorage of the character described, a base formed with a recess and havin g a pair of apertures in the recess penetrating the base, a plate seated in the recess, a backing memberf on the opposite side of the base, and a pair of screw plugs covered by and aiixed to the plate, said screw plugs projecting through said apertures and being screwed into said backing member.

5. In an anchorage of the character described, a base, screw plugs passing through said base and having shouldered heads bearing against the front face of the base, a backing plate bolted to the rear of said base by means of said screw plugs, a plate seated against the front face of the base and recessed to receive said shouldered heads, each screw plug having an undercut recess in the head thereof, the plate being formed with flanges adapted respectively to enter the recesses in the screw plugs, and means for 0H- setting the flanges into the undercut portions of the recesses in the screw plugs.

6. In an anchorage of the character described, a base formed with a pair of apertures, a plate on one side of the base covering said apertures, a screw plug affixed to the plate and project-ing through one of said apertures, a nut on the other side of the base into which the plug is screwed, and means extending through the other aperture, said means engaging the nut and the plate to prevent turning of the nut or the plate.

7. In an anchorage of the character described, a base formed with a pair of apertures, a plate on one side of the base covering said apertures, a screw plug aliixed to the plate and projecting through one of said apertures, a nut on the other side of the base into which the plug is screwed, and means secured to the plate and extending through the other aperture, said means engaging the nut to prevent the nut from being turned.

WILLIAM I-I. WHEELER. JUDSON C. LOGAN. 

